The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 2015
Filed:
Oct. 31, 2011
Jingtao Yang, Guangdong, CN;
Qianhao Tan, Guangdong, CN;
Yannong Wu, Guangdong, CN;
Pingting Yang, Guangdong, CN;
Jingtao Yang, Guangdong, CN;
Qianhao Tan, Guangdong, CN;
Yannong Wu, Guangdong, CN;
Pingting Yang, Guangdong, CN;
Panasonic Ecology Systems Guangdong Co., Ltd., Foshan, Guangdong, CN;
Panasonic Corporation, Osaka, JP;
Abstract
An air exchange fan, includes: a frame provided with an opening, a helicoid housing with an air suction inlet disposed in the frame, an air blower disposed in the helicoid housing, and, a circuit board box mounted at the air suction inlet side, wherein a silencing plate is mounted above the outer peripheral of the air suction inlet, the silencing plate has a streamlining structure formed by outwardly expanding from the air suction inlet in an axial direction of a rotation axis of the air blower, the rotation axis of which serving as the center, within a range that is from a tongue of the helicoid housing to a location with a 90 degrees angled from the tongue in a direction opposing to the rotation direction of the air blower, and the silencing plate has a curved chamfered shape which mates with the peripheral shape of the air suction inlet.